Question about 2004 Yamaha TT-R 125 L

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2004 ttr-125 bike won't start period. installed new vavles because the exhaust valve was bent, cleaned the carb and timed the cam and piston to TDC. i have the exhaust pipe off so i can hear the valve action. when i kick it, it doen't get firm till half stroke. i put my hand over the carb intake and it has enough sucktion just to notice, every hundred kicks or so, i get a little "pop" of life, them nothing, plz help me?

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MY FIRST THOUGHT WOULD BE TO DO A SPARK CHECK AND INSURE SUFFICIENT FIRE THEN, IF YOU HAVEN'T, INSTALL NEW PLUG AND RECHECK THE VALVE ADJUSTMENT. IF YOU HAVE VERY LITTLE SUCTION AT THE CARB, YOU PROBABLY DON'T HAVE ENOUGH TO PULL FUEL FROM THE CARB....ALSO RECHECK AND MAKE SURE THE INT. VALVE ISN'T BENT TOO AND DID YOU LAP YOUR NEW VALVE IN?

Posted on Oct 20, 2009

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Think ur timing is off-go bac n reset it -could hav slipped wen u titend the sproket n crank-hook a compression tester to it-bet its off-TDC can be a touchy sit--inspec spark n fuel area for good measure

Posted on Sep 04, 2009

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After trying to start the bike, remove spark plug, is it wet or dry? dry means carb problem, wet ignition problem.gtting firm till half stroke is normal, as compression is increasing. also make sure you didnt set the cam on wrong stroke, like exhaust instead of compression.

Posted on Sep 04, 2009

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1 Answer

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I just changed my head gasket on my 1991 Honda XR250L. Now that I have it rebuild, the bike wont start. I have made sure the piston is at TDC, the cam shaft is placed right. I dont know what is wrong. any...


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1 Answer

I have a 2004 Yamaha TTr 125 with a bent exhaust valve. What other parts may I have to replace as a result of this??


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